How much load would a W I beam (10"x10") - Web measures approx. .379 and flange approx. .537 27' long supported at both ends. Load would be pulling off the bottom flange at center of beam.
Thanks for the help.

The beam would be used to make a gantry crane. I could put a gusset in the outer corners in 2 or 3 feet from the ends if it would help any. Have 4400 lb hoist to hang on a trolley running on bottom flang. Have headroom restrictions so hoping to use this 10" beam. Could not find this beam in book so thinking it's not a standard beam but found one at the right price. Just interested in knowing what this beam would be rated at or at what points could it handle how much weight. I could paint the loads on it at the correct points. I would be the only one using it.
thanks again